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Unread 06-22-2010, 12:01 AM   #1
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1994 YJ Wrangler 
Join Date: Oct 2009
Location: Blossburg, Pennsylvania
Posts: 292
Engine swap wirng harness

Is there a place online somewhere that can walk through the rewiring process of the engin harness for an engine swap?? Im in the process of getting everything around for mine... but dont know how to simplify/truncate the engine harness

My mom:
- "put your damn wipers down, their bugging me"
- "This thing drives too trucky"
- "Its been a while since something broke on your truck"
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Unread 06-22-2010, 05:05 AM   #2
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1989 YJ Wrangler 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 14,756
What engine you are putting in would help.
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Unread 06-22-2010, 06:38 AM   #3
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1987 YJ Wrangler 
Join Date: Oct 2007
Location: Kingston, Ontario, Canada
Posts: 115
and what is coming out
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Unread 06-22-2010, 06:58 AM   #4
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1993 YJ Wrangler 
Join Date: Jan 2005
Location: Albuquerque, NM
Posts: 6,410
Even knowing the in/out motors, the answer to your 'is there a writeup' is probably No. There are just too many combinations of years and wires and wire colors, even in what you would consider a 'common' swap.

What worked incredibly well for me was subscribing to AllDataDIY.com for the motor vehicle and the Jeep vehicle. Then you can see what color wire from the Jeep goes to what color wire on the motor to power the computer, etc. I even got enough information and had the full wiring from the '02 motor I used that I was able to swap in the full '02 motor under-hood fuse-box and eliminate the Jeep box. That was pne of the best moves I made in the swap, because now I have a zillion available circuits and relays for whatever I do in the future (E.G. the Jeep does not have heated seats, but the fuse box has a spot for that, which can run the ARB system).
'93 YJ, '02 GM 4.3 Vortec V6, SOA, dual ARB's, 8.8+D30(w/WarnHubs), 4.88 gears, 35" BFG KM2's, AX15, 15x7 wheels, NP231+4:1+SYE+2LO, York OBA, Warn M8000, no top or doors Apr-Oct.
Member and Web guy: New Mexico 4 Wheelers My Truck Page on NM4W Site
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